High-water-consumption layer zone identification method based on dynamic and static data constraints

Abstract

The invention relates to a high-water-consumption layer zone identification method based on dynamic and static data constraints. The method comprises the following steps: 1, a high-water-consumption well point identification method; 2, a high water consumption layer section identification method; 3, a high-water-consumption zone identification method: assuming a stratum as a circuit which is connected in series on a plane and connected in parallel in a vertical direction, calculating the water injection intensity between any small layer and any injection and production well by adopting a Darcy formula and a hydroelectric similarity principle on the basis of a seepage mechanics theory and oil reservoir engineering, and further judging dominant water flow distribution; 4, according to the identification results of the high-water-consumption well points, the high-water-consumption layer sections and the high-water-consumption zones, the distribution characteristics of the high-water-consumption layers in the vertical direction and the plane are depicted respectively, and the identification results of the high-water-consumption layers are given comprehensively; and 5, establishing a three-dimensional geologic model of the high-water-consumption water layer zone in combination with a reservoir configuration recognition result. According to the method, the limitation of single static data or dynamic data in high-water-consumption layer zone identification is made up, and the high-water-consumption layer zone can be more accurately distinguished.

Description

technical field [0001] The invention relates to a method for discriminating sedimentary microfacies of clastic rocks in the technical field of petroleum exploration, in particular to a method for identifying high water-consumption zones based on dynamic and static data constraints. Background technique [0002] The biggest problem faced in the late stage of ultra-high water cut in the integrated oilfield is ultra-high water cut and low economic benefits. Reducing ineffective water injection, reducing low-efficiency water injection, reducing water injection cost, liquid extraction cost and treatment cost are the most urgent problems in water injection development. The most prominent production contradiction in the late stage of ultra-high development of the integrated oilfield is that 15% of the high water consumption zone consumes 90% of the total water injection. How to effectively understand the characteristics, distribution and formation mechanism of the high water consu...

AI Technical Summary

Problems solved by technology

At present, there are relatively many studies on the dominant seepage channels based on geological control factors, such as the spatial distribution and characteristics of large pores, how to define the high water consumption zones with low efficiency and ineffective circulation, and how to define related evaluation parameters, especially the spatial distribution. How to describe, no one has done research yet

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